Potassium Phosphate, Tribasic → 4-chloro-3-(1-methyl-1H-pyrazol-4-yl)-1-(2-(4-methylpiperazin-1-yl)ethyl)-5-phenyl-1H-pyrazolo[3,4-c]pyridazine

Participants

Reaction Steps

Nitrogen was bubbled through a suspension of 4-chloro-3-iodo-1-(2-(4-methylpiperazin-1-yl)ethyl)-5-phenyl-1H-pyrazolo[3,4-c]pyridazine (75 mg, 0.16 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (37 mg, 0.18 mmol) and K3PO4 (99 mg, 0.47 mmol) in DMF (1.2 mL) and water (0.4 mL) for 20 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (13 mg, 0.016 mmol) was added and the tube sealed and heated using microwave irradiation to 60° C. for 30 min. The crude reaction mixture was filtered and purified by preparative HPLC to provide Compound Ic (42 mg).

Provenance & Evidence